TWO-STROKE ENGINE WITH ONE CYLINDER AND TWO-STROKE ENGINES SERIES Russian patent published in 2020 - IPC F02B25/14 F02B25/16 F02B33/04 F02B33/44 

FIELD: engine building.

SUBSTANCE: invention consists in fact that two-stroke engine has cylinder (2, 52) and at least one blowdown channel (10, 11, 60, 61), which when piston (5) is located in the area of the bottom dead point, connects the flow between inner volume (20) of the engine crankcase and combustion chamber (3, 53) made in cylinder (2, 52). Engine crankcase (4) has engine crankcase connecting flange (38) for connection with cylinder (2, 52), in which there is at least one first connecting channel (46) and at least one second connection channel (47). At least one blowdown channel (10, 11, 60, 61) passes into crankcase (4) of engine either through at least one first connecting channel (46), or through at least one second connecting channel (47). Through the other of said first and second connecting channels (46, 47), blowdown channel does not change into engine casing (4). For the two-stroke engines series it is provided that in two-cycle engine (1) of the series having first cylinder (2), the second connecting channel (47) is closed from cylinder (2), and wherein in the series two-cycle engine (51) having second cylinder (52), the first connecting channel (46) is closed from cylinder (52).

EFFECT: technical result is simplification and unification of engines in structural series.

13 cl, 7 dwg